| IAGA Code | TAN |
| Name | Antananarivo |
| Opened | 1899-12-31 |
| Closed | 2008-01-01 |
| Latitude | -18.917 °N |
| Longitude | 47.552 °E |
| Altitude | 1375.0 m |
| Country | Madagascar (MG) |
| Website | bcmt.fr/tan.html |
| INTERMAGNET Member | 1993 - 2007 |
| Notes | 2010-07-01: Replaced 1957 - 1959 hourly mean datasets with data obtained from WDC Kyoto, to correct an issue with the Z component tabular base. |
| No contact information available. |
| Instrument | Type | In Use From | In Use To |
|---|---|---|---|
| GEM Systems GSM-90 | Scalar | 1900-01-01 | |
| Thomson VF031 | Vector (HDZ) | 1900-01-01 | |
| DI-flux (Zeiss 010B theodolite with Tromsö electonics) | Absolute | 1900-01-01 |